How to find word in string of words and numbers

Question

This is example:

 $haystack = "451516178jjgsjkjjssbbziznbdkbnjv.bvkljk_isikjsksjkthisjkhkjhkjh4364765467";
 $needle = "this";

I need true or false. How to do that?

I think with preg_match but I dont know how.

preg_match is too much for this samll comaprison.use [`strpos()`](http://us2.php.net//manual/en/function.strpos.php) — krishna, Jun 17 '14 at 06:33
http://stackoverflow.com/questions/4366730/how-to-check-if-a-string-contains-specific-words — Mithun Satheesh, Jun 17 '14 at 06:36

score 7 · Answer 1 · answered Jun 17 '14 at 06:37

7

You don't need regex to do this. As already mentioned in comments use strpos():

if(strpos($heystack, $needle) !== false) {
// contains
}

answered Jun 17 '14 at 06:37

The Mask

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score 1 · Answer 2 · answered Jun 17 '14 at 06:38

1

Try this:

$haystack = "451516178jjgsjkjjssbbziznbdkbnjv.bvkljk_isikjsksjkthisjkhkjhkjh4364765467";
$needle = "this";

$string = strpos($haystack, $needle);

if($string === false)
 echo "false";
else
 echo "true";

answered Jun 17 '14 at 06:38

user3690206

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Govind · Answer 3 · 2014-06-17T06:47:16.243

1

You can try strpos functionality.

Example:

$title = "this is a string123";
if ((strpos($title,'is')=== false) {
    echo 'false';
else
   echo 'true';
}

reference : http://php.net/manual/en/function.strpos.php

edited Jun 17 '14 at 06:47

answered Jun 17 '14 at 06:38

Govind

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you cannot use (!) in this case because this will fail if the occurence is in position `0` (which falls into !). you must use `=== false` – user1978142 Jun 17 '14 at 06:43
actually no problem, you better change this because some users like to downvote without an explanation. and no i wont downvote just want to clear this up – user1978142 Jun 17 '14 at 06:45

score 1 · Accepted Answer · answered Jun 17 '14 at 06:39

1

This is how you do it with regex:

$needle = "/this/";
echo preg_match($needle, $haystack);

This will return 1 one if it matches else 0

answered Jun 17 '14 at 06:39

jayantS

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How to find word in string of words and numbers

4 Answers4